Worked fine until yesterday. Board turned off with computer, also the power switch on the board was in off position before turned on this morning. Now the debugger circuit/IC does not respond, no more programmer LED, computer does not recognize this board, nothing happens when plugged in or power cycled in Windows and Linux, no more USB device load. The nRF52 parts of the boards still works fine, with Serial output, IO toggles and Scanning LED blinking as programmed since last load. Briefly checked supplies, 5V, 3.3V and 3V present on the board. My other nRF52 DK still works OK.
Are there any trouble shoot and recovery for the on board debugger?
Thanks!
FI
